Application of a patch that complements information given to users on consistency testing.
The patch 'patch_1.2-r3375_consistency_branch__docstring' by Sebastien Morin (sebastien dot morin
dot 1 at ulaval dot ca) adds some text in docstrings or comments of files
'maths_fns/consistency_tests.py' and 'specific_fns/consistency_tests.py' to help users understand
why and how use the consistency tests.